US3050118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fracture placing method
Assignee: Pan American Petroleum Corp
•
Filing: 1959-03-23
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Granted: 1962-08-21
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Elkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:54
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2281751A
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US2301624A
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US2642142A
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US2676662A
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US2690123A
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US2892405A
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US2766828A
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US2927638A
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US2943684A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |